6661330029999 has 16 divisors (see below), whose sum is σ = 9869181564000. Its totient is φ = 4440641669568.

The previous prime is 6661330029971. The next prime is 6661330030039. The reversal of 6661330029999 is 9999200331666.

It is not a de Polignac number, because 6661330029999 - 2¹¹ = 6661330027951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661330029919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6306934 + ... + 7286979.

It is an arithmetic number, because the mean of its divisors is an integer number (616823847750).

Almost surely, 2^{6661330029999} is an apocalyptic number.

6661330029999 is a deficient number, since it is larger than the sum of its proper divisors (3207851534001).

6661330029999 is a wasteful number, since it uses less digits than its factorization.

6661330029999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13612071 (or 13612065 counting only the distinct ones).

The product of its (nonzero) digits is 25509168, while the sum is 63.

The spelling of 6661330029999 in words is "six trillion, six hundred sixty-one billion, three hundred thirty million, twenty-nine thousand, nine hundred ninety-nine".